Ski boot



FIG. 1 is a lateral view of a ski boot showing my new design;

FIG. 2 is another lateral view thereof, opposite to that of FIG. 1;

FIG. 3 is a front perspective view thereof;

FIG. 4 is a rear perspective view thereof;

FIG. 5 is a top perspective view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front right perspective view thereof.

The ornamental design for a ski boot, as shown.